Decrease in actin gene expression in melanoma cells compared to melanocytes is partly counteracted by BrdU-induced cell adhesion and antagonized by L-tyrosine induction of terminal differentiation.

L A Gómez; M Strasberg Rieber; M Rieber

doi:10.1006/bbrc.1995.2595

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Decrease in actin gene expression in melanoma cells compared to melanocytes is partly counteracted by BrdU-induced cell adhesion and antagonized by L-tyrosine induction of terminal differentiation.

L A Gómez·M Strasberg Rieber·M Rieber

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Abstract

Malignant transformation is frequently accompanied by changes in the cytoarchitecture of adherent cells, which may be influenced by fluctuations in actin gene expression. We now show that normal melanocytes express a 5 fold higher level of actin mRNA than their melanoma counterparts. Induction of terminal melanogenesis did not increase actin in melanoma cells. However, culture with the thymidine analog, Bromodeoxyuridine, increased actin expression in undifferentiated but not in differentiating melanoma. Cell detachment assays and cell shape comparisons revealed a direct correlation of actin mRNA with increased melanoma cell adhesion rather than with differentiation-mediated suppression of tumor growth.

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Actins Animals Bromodeoxyuridine Cell Adhesion Cell Differentiation Cells, Cultured Gene Expression Regulation, Neoplastic Melanocytes Melanoma, Experimental Mice Mice, Inbred C57BL RNA, Messenger Tyrosine Ultraviolet Rays Comparative Study Journal Article Research Support, Non-U.S. Gov't

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L A Gómez, M Strasberg Rieber, M Rieber. 1995-11-02. Decrease in actin gene expression in melanoma cells compared to melanocytes is partly counteracted by BrdU-induced cell adhesion and antagonized by L-tyrosine induction of terminal differentiation.. https://doi.org/10.1006/bbrc.1995.2595

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